I purchased 2 pigmy goats in 2006, one 3 day old kid and the mother. I have no idea how old the mother was when I purchased her. She , the mother, has developed extreme large utters. They almost drag the ground. The do not seem to be tender to the touch, but she is moving slowly and seems to have stiff rear legs. The stiffness may be due to arthritis. Is sagging utter normal for a aging pigmy goat? If it is arthritis is there something I can due to relieve the pain?